Without warning, water rushed into a woman’s home on a raised platform above the floodplain of Bangladesh’s Teesta River. She was just a hand’s distance from her infant son, but she couldn’t stop him from falling into the floodwaters. “She can’t recover back from the trauma,” said the University of Dundee’s Nandan Mukerjee of the mother who lost her child to the currents of climate change.

The first U.S. city to host a docked bike-share system, Washington, D.C., is now home to a rapidly growing influx of dockless bikes, with five companies vying for the market. The docked system still accounts for 87 percent of the shared bikes in the United States, but the number of dockless bikes—which can be located by riders using an app and then left anywhere—is growing rapidly. The data from these location-enabled bikes provide a unique opportunity to measure the point-to-point transportation needs of millions of people in some of the world’s densest cities.

$1 billion sales in two minutes. More than 250,000 purchases every second. Singles’ Day, China’s annual retailing extravaganza, absolutely crushes Black Friday: E-commerce giant Alibaba raked in $17.8 billion in gross sales during last year’s event, more than double the combined total of $6.8 billion in sales during the United States’ 2016 holiday shopping kick-off. The shopping spree lasts only 24 hours, but its environmental impacts will extend for decades.

Six years of brutal warfare have destroyed basic infrastructure in Yemen, Libya, and Syria. While U.S. and European governments have been largely preoccupied with providing immediate assistance and dealing with refugees, international humanitarian organizations—such as the International Committee of the Red Cross and Doctors without Borders—are focusing on how to repair, maintain, and safeguard the facilities that provide essential services like clean water, sanitation, and electricity. Yet these efforts are hindered by lack of resources, protracted violence, and—most insidiously—by the warring parties’ intentional targeting of humanitarian actors and environmental infrastructure. Just as the extensive damage from hurricanes in the Caribbean and southeastern United States has underscored the need for more resilient infrastructure, the wars of the Middle East show that protecting infrastructure is key to protecting civilians caught up in conflict.

In 2011, a group of Hong Kong water activists and researchers traveled the length of the Dongjiang (East) River, which stretches from northeast Guangdong Province into Hong Kong’s New Territories, to investigate the challenges facing the watershed. The Dongjiang basin, which provides nearly 80 percent of Hong Kong’s water supply, has suffered water shortages due to the region’s increasing urbanization and industrialization. They found unchecked wastewater discharges—from agriculture, poultry farms, chemical plants, tanneries, and even an open-air quartz quarry—were dangerously degrading water quality.

Despite sharing a common element—water—the freshwater community and the Water, Sanitation and Hygiene (WASH) community have traditionally worked independently of each other, said Jimmiel Mandima, director of U.S. government relations at the African Wildlife Foundation during a recent webinar organized by USAID-supported Africa Biodiversity Collaborative Group (ABCG). However, that is starting to change: “Integration will bring value addition and synergy,” he said.